Rim



july 15 1924. Br DARROW Filed on. 11; 1921 vide a rim for wire Wheels that shall be 7 wheel.

Patented July 15, 1924. it

nuncnss nan-now, or non'rmeron rank, cnmronnm, ASSIGNOR To run coon- YEAR TIRI E & RUBBER COMPANY. OK A KRON, OHIO, A CORPORATION OF OHIO.

To all whom it may. concern:

Be it known that I, BUncEssDAnRow, a citizen of the United States, residing at Huntington Park, in the county of Los Angeles and State of California,-have invented new and useful Improvements in Rims, of which the following is a specification.

My invention relates to rims for pneumatic tires, and it has for its object to proparticularly strong and durable, of light weight, and on which. a tire may be readi y changed.

Fig. 1 of the accompanying drawing is a transverse sectional view, shown in perspective, of a portion of a vehicle wheel embodyin%my-invention; and

ig. 2 is a corresponding view of a modification of the invention.

The form of my invention shown in Fig. 1. is particularly adapted for use with airplane wheels and represents a portion of a pneumatic tire 1 that is secured on a rim 2 by means of a pair of upstanding flanges 3 that engage the'bead portions 4 of the tire. The rim has a pair of circumferential lands 5 that serve to support the toe of the bead portions 4. A. groove 6 is formed between the lands 5 to receive the heads 4 of the tire during the mounting thereof on the This groove can be made suficiently wide to receive both of the tire'beads simultaneously, or of such size as to receive only one of the beads at a time.

'A spoke lacing gutter 7 is formed between each tireretaining flange 3 and the edit land 5 of, the rim. Each of these gutters is adapted to receive a series of'nipples 8 ole plurality of wire spokes 9 that comprise the The tters '2 are each reenter by a series .0 elements 10 that extend from the outer flanges 3 to the central channel 6 of the rim. Each of these. reenforcing elements emportion 10 that extends across the spoke bodies a head portion 10 that is suficiently large to partially support the flange 3, a

gutter, and a portion 10 that is riveted, or otherwise suitably secured to the wall of the groove 6. A spacing member 11' is mounted on the central portion 10 of thereenforcing member 10 and extends between the walls of the gutter 7.; The spacing members 11 are Application filed October 11,4931..- Seria1-No. 506,'953,

so arranged that their upper surfaces form a support for the heel of the tire head 4. 'If desired, the spacing members 11' and the ortion 10? of the reenforcing element may e formed in a single integral piece.

A pneumatic tiremay be mounted on a rim of the form described in conjunction with Fig. 1 by placing the two beads of the tire within the central channel 6 on one side of the'rim. "The innermost bead may then be lifted to its seat on the raised land 5 and the ed out that, in the usual form ofwire wheel,v

one set of spokes is forced to sustain a greater pro ortion of the load than the remaining sets of spokes. The uniform distribution of these load stresses reduces the required size and number of spokes em- P tt d greater lateral strength where the spoke gutters are closely together.

The modification shown in Fig. 2 difiers from that shown in Fig. l in that it employs located more a pair of outer shoulders 12 that are adated the heel of the tire heads 4. H

upstang flanges 13-, the bead toe-support-v t e central channel 16 of this rim are of subing lands 15, the spoke tters 1?, an

stantially the same form as the corresponding portions of the rim shown in Fig. 1 and perform the same functions.

.' v,"lhe reinforcing elements 20 that are employed in this rim are shown as partially snpporting the bead portions of the tirebut they do not necessarily constitute a partial support thereforh These elements are also illustrated as not extending through the wall of the groove 16.

Other modificationsof my invention will be apparent to those skilled in the m. ii desire, therefora that only such limitations and also provides a wlfeel having than is obtainable ice clrcumferential lan shall be imposed on the -my invention as are in companyin claims. What I c aim is:

Spirit and scope-of mated in the ac- 1. A unitary rim comprisingia pair of cumferential channel of at least the width of a tire casing bead, a air of laterally spaced d s respectively formed between said channel and each of said gutters, and a plurality of reinforcing elements supportin the outer gutter wall from one of the we ls of the ad acent land.

2. A unitary rim com rising a central circumferential channel 0 suflicient width to receive one of the bead portions of a tire casing,-a bead seati land formed on each side of said channe, an upstanding the retaining flan e formed on each marginal portion of said rim, said flange extendin substantially the same distance above sai land as the channel extends below the land in lateral section, a spoke receiving gutter formed between each of said lands andthe correspondin flange, andv a plurality of reinforcing e ements bridging each of said gutters and supporting each of said flange or(tiions from the side wall of the adjacent an I 3. A unitarywim for pneumatic. tires comprising a pair of upstanding bead-retaining anges, a pair of laterally-spaced circumferential gutters formed between the flanges rality and each adapted'to we a plurality of spoke nipples, a 8:11:- of laterally-spaced circumferential lan formed between the gut ters, and a relativel deep central groove groove formed between the lands, and a luof reenforclng elements exten ing from theilands to the flanges.

5. A unitary rim for pneumatic-tires comrising a pair of vupstanding bead-retaining anges, a pair .of laterally spaoed circumferential gutters formed between the flan es, each of said gutters being adapted to receive a series of spoke nipples, a pair of laterally spaced circumferential lands formed between the gutters, a relatively deep central groove formed be'tween'the lands, and a Inralityi of reenforcing elements exte i across the top of the gutters and flush wit the land. I a

In witness whereof I have hereunto si ed y name in the presence of two subscri ing witnesses.

BURGESS DARROW. Witnesses: v

H. B. HUMPEREY, G. Cmrroan Bram. 

